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Jenkins Assembla merge request builder Plugin missing authentication to access endpoint

Moderate severity GitHub Reviewed Published Apr 12, 2023 to the GitHub Advisory Database • Updated Apr 21, 2023

Package

maven org.jenkins-ci.plugins:assembla-merge-request-builder (Maven)

Affected versions

<= 1.1.13

Patched versions

None

Description

Jenkins Assembla merge request builder Plugin provides a webhook endpoint at /assembla-webhook/ that can be used to trigger builds of jobs configured to use a specified repository.

In Assembla merge request builder Plugin 1.1.13 and earlier, this endpoint can be accessed without authentication. This allows unauthenticated attackers to trigger builds of jobs corresponding to the attacker-specified repository.

References

Published by the National Vulnerability Database Apr 12, 2023
Published to the GitHub Advisory Database Apr 12, 2023
Reviewed Apr 12, 2023
Last updated Apr 21, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS score

0.130%
(49th percentile)

Weaknesses

CVE ID

CVE-2023-30521

GHSA ID

GHSA-jr86-6j4j-mv45

Source code

No known source code
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